/**
 * @license
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * Ensure GrChangeActionsInterface instance has access to gr-change-actions
 * element and retrieve if the interface was created before element.
 *
 * @param {!GrChangeActionsInterface} api
 */
function ensureEl(api) {
  if (!api._el) {
    const sharedApiElement = document.createElement('gr-js-api-interface');
    setEl(api, sharedApiElement.getElement(
        sharedApiElement.Element.CHANGE_ACTIONS));
  }
}

/**
 * Set gr-change-actions element to a GrChangeActionsInterface instance.
 *
 * @param {!GrChangeActionsInterface} api
 * @param {!Element} el gr-change-actions
 */
function setEl(api, el) {
  if (!el) {
    console.warn('changeActions() is not ready');
    return;
  }
  api._el = el;
  api.RevisionActions = el.RevisionActions;
  api.ChangeActions = el.ChangeActions;
  api.ActionType = el.ActionType;
}

export function GrChangeActionsInterface(plugin, el) {
  this.plugin = plugin;
  setEl(this, el);
}

GrChangeActionsInterface.prototype.addPrimaryActionKey = function(key) {
  ensureEl(this);
  if (this._el.primaryActionKeys.includes(key)) { return; }

  this._el.push('primaryActionKeys', key);
};

GrChangeActionsInterface.prototype.removePrimaryActionKey = function(key) {
  ensureEl(this);
  this._el.primaryActionKeys = this._el.primaryActionKeys
      .filter(k => k !== key);
};

GrChangeActionsInterface.prototype.hideQuickApproveAction = function() {
  ensureEl(this);
  this._el.hideQuickApproveAction();
};

GrChangeActionsInterface.prototype.setActionOverflow = function(type, key,
    overflow) {
  ensureEl(this);
  return this._el.setActionOverflow(type, key, overflow);
};

GrChangeActionsInterface.prototype.setActionPriority = function(type, key,
    priority) {
  ensureEl(this);
  return this._el.setActionPriority(type, key, priority);
};

GrChangeActionsInterface.prototype.setActionHidden = function(type, key,
    hidden) {
  ensureEl(this);
  return this._el.setActionHidden(type, key, hidden);
};

GrChangeActionsInterface.prototype.add = function(type, label) {
  ensureEl(this);
  return this._el.addActionButton(type, label);
};

GrChangeActionsInterface.prototype.remove = function(key) {
  ensureEl(this);
  return this._el.removeActionButton(key);
};

GrChangeActionsInterface.prototype.addTapListener = function(key, handler) {
  ensureEl(this);
  this._el.addEventListener(key + '-tap', handler);
};

GrChangeActionsInterface.prototype.removeTapListener = function(key,
    handler) {
  ensureEl(this);
  this._el.removeEventListener(key + '-tap', handler);
};

GrChangeActionsInterface.prototype.setLabel = function(key, text) {
  ensureEl(this);
  this._el.setActionButtonProp(key, 'label', text);
};

GrChangeActionsInterface.prototype.setTitle = function(key, text) {
  ensureEl(this);
  this._el.setActionButtonProp(key, 'title', text);
};

GrChangeActionsInterface.prototype.setEnabled = function(key, enabled) {
  ensureEl(this);
  this._el.setActionButtonProp(key, 'enabled', enabled);
};

GrChangeActionsInterface.prototype.setIcon = function(key, icon) {
  ensureEl(this);
  this._el.setActionButtonProp(key, 'icon', icon);
};

GrChangeActionsInterface.prototype.getActionDetails = function(action) {
  ensureEl(this);
  return this._el.getActionDetails(action) ||
    this._el.getActionDetails(this.plugin.getPluginName() + '~' + action);
};
